[1] National Cerebral and Cardiovascular Center,Department of Cardiovascular Surgery
[2] Toho University,Department of Surgery, Medical Center, Ohashi Hospital
[3] Osaka University Graduate School of Medicine,Department of Cardiovascular Surgery
[4] University of Tokyo,Department of Cardiac Surgery, Graduate School of Medicine
[5] Kagoshima University Graduate School of Medical and Dental Sciences,Department of Thoracic and Cardiovascular Surgery
[6] St. Marianna University School of Medicine,Department of Cardiovascular Surgery
[7] Kawasaki Medical School,Division of Thoracic and Cardiovascular Surgery
[8] Toho University,undefined